tightens造句
One set of provisions
tightens emission standards.
一套使排放标准更加严格的规定.
Requires no special tools or fittings; hand
tightens to relief valve outlet.
不需要专用工具或管件; 用手将其紧固到安全阀上即可.
The heart
tightens at the grandeur we've already left behind.
在我们已经抛到身后的雄伟里,心在收紧.